Hole saw blade



FIG. 1 is a perspective view of a hole saw blade showing the present invention;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the figures show structure or boundaries that are not part of the claimed design. 

The ornamental design for hole saw blade, as shown and described. 